船舶蒸汽动力系统的快速变负荷运行性能仿真分析

杨元龙; 吴炜; 吴金祥; 郑子都

doi:10.19693/j.issn.1673-3185.01249

船舶蒸汽动力系统的快速变负荷运行性能仿真分析

Simulation analysis on performance of fast variable load for marine steam power system

摘要

摘要:
目的蒸汽动力系统的快速变负荷能力是决定船舶机动性能的关键技术指标，对船舶航行的安全性和稳定性而言具有重要意义。
方法建立包含增压锅炉、汽轮机组、给水泵等设备的蒸汽动力全系统仿真模型，基于实验数据验证仿真模型的动态精度，并针对快速升负荷和降负荷工况下的蒸汽动力系统动态性能进行仿真计算。
结果计算结果表明：涡轮增压机组与锅炉的匹配速率较慢，制约了动力系统的快速升负荷能力；汽轮机组回汽保护的调节能力不足，限制了动力系统的快速降负荷能力。
结论研究成果可为实船蒸汽动力系统设计优化提供理论支撑。

Abstract:
Objectives The fast variable load capacity of steam power system is a key technical index to determine the maneuverability of ships, which is of great significance to the safety and stability of marine navigation.
Methods Simulation model of steam power system including of supercharged boiler, steam turbine unit, feedwater pumps and other equipments is established. Based on the experimental data, the stability and accuracy of the simulation model is verified. The dynamic performance of steam power system is simulated under fast rising and reducing load conditions.
Results The calculation results show that a slow matching rate between turbocharger unit and boiler, which restricts the fast rising load capacity of the steam power system. Meanwhile, steam back brake of steam turbine unit is lack of ability, which restricts the fast reducing load capacity of the steam power system.
Conclusions The research results can provide theoretical support for the design and optimization of the steam power system of a real ship.

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